Home / 28,466.21-39,283.17-15,720.19

Finding the Fourth Proportional to 28,466.21, 39,283.17 and 15,720.19

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Solution

The fourth proportional to 28,466.21, 39,283.17 and 15,720.19 is: 21,693.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,466.21 : 39,283.17 = 15,720.19 : x
  2. Step 2: Convert to fraction form
    28,466.21/39,283.17 = 15,720.19/x
  3. Step 3: Cross multiply
    28,466.21x = 39,283.17 × 15,720.19
  4. Step 4: Simplify right side
    28,466.21x = 617,538,699.79
  5. Step 5: Solve for x
    x = 617,538,699.79/28,466.21
  6. Step 6: Final answer
    x = 21,693.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.